Shower system



FIG. 1 is a perspective view of a shower system showing my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a rear view thereof.

The broken lines represent portions of a shower system and form no part of the claimed design. 

CLAIM The ornamental design for a shower system, as shown and described. 